Monetary policy definitely impacts prices. However high prices induces expansion if capital is available. This lowers prices. The rest you outline are fingers y

Monetary policy definitely impacts prices. However high prices induces expansion if capital is available. This lowers prices. The rest you outline are fingers you can place on the scales in either direction. But in the end if supply is elastic and demand increases prices might go up for a while but as supply capacity builds prices will drop as competition increases. Monetary policy doesn’t change that equation, it just gives you a lever to induce spending or savings.